CN102307022B - Miniature piezoelectric ceramic driving control system - Google Patents
Miniature piezoelectric ceramic driving control system Download PDFInfo
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- CN102307022B CN102307022B CN 201110171520 CN201110171520A CN102307022B CN 102307022 B CN102307022 B CN 102307022B CN 201110171520 CN201110171520 CN 201110171520 CN 201110171520 A CN201110171520 A CN 201110171520A CN 102307022 B CN102307022 B CN 102307022B
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Abstract
The invention relates to a miniature piezoelectric ceramic driving control system, which belongs to the field of micro-displacement control technology. The system comprises a power supply circuit module, a master controller, and a DA conversion and high-voltage amplification circuit. A 12V power supply and a system triggering signal are respectively connected to the power supply circuit module and the master controller. The power supply circuit converts 12V power supply into 5V, 3.3V, 100V and -12V voltages, 3.3V voltage is supplied to the master controller and the DA conversion module, -12V voltage and 100V voltages are supplied to the high-voltage amplification circuit. The master controller forms a corresponding digital signal according to the waveform of the system triggering signal, converts the digital signal into an analog small-voltage signal through the DA conversion module, and finally converts into the high voltage through the high-voltage amplification circuit to be the driving voltage of the piezoelectric ceramic. The miniature piezoelectric ceramic driving control system is 10.7 cm in length and 7.6cm in width and suitable for the miniature design requirement; and the system can be widely used in the miniature control system with the piezoelectric ceramic as core.
Description
Technical field
The present invention relates to a kind of Miniature piezoelectric ceramic driving control system, belong to micrometric displacement control technology field.
Background technology
Photoelectric imaging technology develops rapidly, and the field of application is also more and more extensive, as having obtained to use widely in various fields such as military, medical treatment, industry, safety.The development of imaging technique has directly driven the development of various CCD and CMOS solid imaging device, and the imaging sensor of various wave bands is also developed rapidly.Concerning infrared band, that infrared focal plane detector array (IRFPA) has is simple in structure, detectivity is strong, low in energy consumption, the advantages such as frame frequency is high, good stability, is widely used in infrared search system, Air-borne Forward-looking infrared system, Imaging Seeker and imaging tracing system.But the array scale of IRFPA is generally little, causes image quality resolution not high.
More and more paid close attention to by people at present as the micro scanning technology that a kind of resolution that can improve image does not need to increase the actual detector number simultaneously.The micro scanning technology is to utilize micro scanner to realize set micrometric displacement in detector interframe, and the reconstruct by adjacent multiple image improves the spatial sampling rate, and is obtained the imaging of high resolution by image processing method.Its image processing method is the Same Scene image that different components is taken, or same device is at the Same Scene image of different times shooting, carry out the sub-pixel location, reconstruct the abundanter image of a width of cloth amount of information by the multiframe sequence image that has each other micro-displacement again.Effectively merge by the image information that several is had the low resolution of difference and relevant information, the micro scanning technology can be removed imaging process such as atmosphere Mass, optical system, and integration samplings etc. are on the impact of image, the establishment noise improves image resolution ratio.
Piezoelectric ceramic be a kind of can be with the mutual material of conversion of mechanical energy and electric energy.The characteristic of piezoelectric ceramic makes it become a kind of desirable fine motion system drive element.Along with the development of the Micro-displacement Technique take piezoelectric ceramic as driving element, the various driver modules that are exclusively used in the piezoelectric ceramic micro-displacement mechanism arise at the historic moment.Theoretically, piezoelectric ceramic devices can obtain infinitesimal displacement resolution.Be subjected to the impact of driver resolution and power supply ripple, the displacement resolution that piezoelectric ceramic can reach is limited, therefore developing high performance piezoelectric ceramic controller has obtained extensive concern, and the research to the Piezoelectric Ceramic control technology is all competitively carried out in countries in the world.As the important component part of micro scanning system, the micro scanning control module plays a part control and drives in whole system, determining to a certain extent the precision of micro scanning reconstruct.Piezoelectric Ceramic control system immature seriously restricted basic research and the application of piezoelectric ceramic aspect dynamically.Present on the market the excessive problem of driver circuit for piezoelectric ceramics ubiquity volume is unwell to and is used in the product, so the exploitation of miniaturization driving control system is very necessary.
Summary of the invention
The objective of the invention is for solving the existing excessive problem of driver circuit for piezoelectric ceramics volume, can realize the function of the mutual conversion of electric energy and mechanical energy providing a kind of Miniature piezoelectric ceramic driving control system according to the piezoelectric ceramic inverse piezoelectric effect.
The technical solution adopted in the present invention is as follows:
Miniature piezoelectric ceramic driving control system comprises power circuit module, master controller, DA conversion and high voltage amplifier circuit.
The power circuit module with the 12V power supply of input transfer to 5V, 3.3V, 100V ,-four voltages of 12V, for other each several part of system provides power supply.This module comprises that 12V turns 5V, 5V and turns 3.3V, 12V and turn 100V, 5V and turn-four submodules of 12V.12V turns the 5V submodule and turns 3.3V submodule, 5V with 5V respectively and turn-and the 12V submodule is connected.Wherein 12V turns 100V inside and contains filter circuit, and the 100V voltage that generates is carried out exporting after the filtering.
Acting as according to being input to the waveform of system triggers signal of master controller generates the digital signal that adjustable and final driving voltage are output into linear relationship, controls the driving voltage of whole driving control system and exports.The size of its output signal has determined the size of system's outputting drive voltage, and its calibration has determined control precision.Master controller comprises singlechip chip, JointTestActionGroup(JTAG, joint test behavior tissue) interface, electrify restoration circuit, coupling capacitance, high frequency crystal oscillator.Master controller is centered by singlechip chip, and jtag interface, electrify restoration circuit, coupling capacitance, high frequency crystal oscillator are connected to around the singlechip chip with star structure.Singlechip chip possesses the high-speed low-power-consumption characteristics, and its function is for coordinating each function sub-modules of whole driving control system.Jtag interface has 10 lines, and 2 is ground wire, and 2 is the 3.3V power line, and 4 holding wires are respectively by drawing on the 10K resistance, and other has two lines unsettled, and master controller can be downloaded computer program by jtag interface.High frequency crystal oscillator is by the 22pF capacity earth, for singlechip chip provides basic clock signal.Electrify restoration circuit is connected on the reset pin of singlechip chip, realizes the electrification reset function of driving control system; Comprise the pull-up resistor of 1K and the charging capacitor of 0.1uF, the reseting signal line of master controller is connected between pull-up resistor and the charging capacitor.
The digital signal that master controller is generated that act as of DA modular converter is converted to simulation small voltage signal, and its conversion accuracy is had relatively high expectations, 10 or 12 of General Requirements.The present invention builds take DA conversion chip DAC7512 as core, and one of them pin of this chip is received on the 3.3V voltage, and a pin ground connection is connected to the filter circuit that 0.1uF and 10uF build between these two pins; Other has three pins to link to each other with master controller.
The high voltage amplifier circuit is the core of system, and it zooms into driving voltage output with the aanalogvoltage small-signal through operational amplifier; Comprise-the 12V filter circuit, operational amplifier, multiplication factor regulating circuit and voltage protection circuit; Wherein-12V filter circuit, multiplication factor regulating circuit link to each other with operational amplifier respectively with voltage protection circuit.The present invention adopts miniaturization high voltage operational amplifier chip to substitute traditional analog circuit.The supply power voltage of high voltage amplifier circuit module has two-way, is respectively-12V and 100V, wherein-12V voltage is furnished with that the polar capacitor of 0.1uF and 10uF forms-the 12V filter circuit.Voltage protection circuit comprises two voltage-stabiliser tubes and 1K resistance.Wherein two pins of high voltage operational amplifier chip link to each other by the two-way voltage-stabiliser tube, oppositely reach the problems such as input voltage is excessive to prevent polarity of voltage.One of these two pins are by the grounding through resistance of 1K, and simulation small-signal is linked in the high voltage operational amplifier chip through the resistance of 1K.The output pin of high voltage operational amplifier chip and connect between the pin of 1K resistance and be connected to the multiplication factor regulating circuit, it comprises the slide rheostat of 10K resistance, 1M resistance and 50K, contacts with 10K resistance after slide rheostat and 1M resistance also connect.For realizing electrostatic defending, general-12V and 100V power line cloth are wide during wiring, and width is generally 20 mil.
The annexation of Piezoelectric Ceramic control system of the present invention is: the 5V of power circuit module turns the 3.3V submodule and connects respectively master controller and DA modular converter, and 5V turns-and the 12V submodule is connected the 100V submodule and connects the high voltage amplifier circuit with 12V; The digital signal output of master controller connects the DA modular converter; The analog signal output of DA modular converter connects the high voltage amplifier circuit.
The Piezoelectric Ceramic control system course of work of the present invention is as follows:
12V power supply and system triggers signal are accessed respectively power circuit module and master controller.Power circuit with the 12V power supply convert to 5V, 3.3V, 100V ,-four voltages of 12V, 3.3V voltage is to master controller and the power supply of DA modular converter ,-12V and 100V are to the high voltage amplifier circuit supply.Master controller generates corresponding digital signal according to the waveform of system triggers signal, then converts simulation small voltage signal to through the DA modular converter, becomes high voltage output finally by the high voltage amplifier circuit conversion, becomes the driving voltage of piezoelectric ceramic.Driving voltage can directly link to each other with the piezoelectric ceramic rod, drives it deformation occurs.
Beneficial effect
Piezoelectric Ceramic control system of the present invention has good dynamic characteristic, and operating frequency range is wider, and low in energy consumption, and output signal accuracy is high.It is adjustable that output voltage of the present invention can reach in 0 to 90 volt of scope voltage, adjustable in the operating frequency 1KHz of voltage.The size of whole system is long to be 10.7cm, and wide is 7.6cm, meets the design needs of miniaturization.The present invention can be widely used in can be used in the piezoelectric ceramic control system in the accurate fields such as frontier defense, public security, coast defence in the miniaturization control system take piezoelectric ceramic as core.
Description of drawings
Fig. 1 is the structural representation of Miniature piezoelectric ceramic driving control system of the present invention.
Fig. 2 is the structural representation of high voltage amplifier circuit of the present invention.
Fig. 3 is master controller in the embodiment and circuit on every side thereof, and wherein a is singlechip control chip, and b is jtag circuit, and c is high frequency crystal oscillator, and d is electrify restoration circuit.
Fig. 4 is embodiment mesohigh amplifying circuit and peripheral circuits thereof.
Fig. 5 is the circuit diagram that 12V turns the 5V circuit module in the embodiment.
Fig. 6 is the circuit diagram that 5V turns the 3.3V circuit module in the embodiment.
Fig. 7 is that 5V turns-circuit diagram of 12V circuit module in the embodiment.
Fig. 8 is the circuit diagram that 12V turns the 100V circuit module in the embodiment.
Fig. 9 is the circuit diagram of DA modular converter in the embodiment.
Figure 10 is the pictorial diagram of embodiment miniaturization Piezoelectric Ceramic control system.
Figure 11 uses the present invention to drive the design sketch of infrared micro scanning imaging system in the embodiment, a is 4 two field pictures before rebuilding, resolution is 320 * 240, between four two field pictures relative displacement is arranged, b is the effect after rebuilding according to four frame low-resolution images, resolution is that 640 * 480, c and e are the part of figure a, and d and f are the part of corresponding figure b.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Present embodiment is according to the piezoelectric ceramic inverse piezoelectric effect, take high-speed low-power-consumption control chip ATMega128 and high precision operating amplifier PA240 chip as core, designs the micro scanning Miniature piezoelectric ceramic driving control system.System forms as shown in Figure 1.Wherein 12V turns the 5V module to adopt the LM2575 chip is core, and physical circuit as shown in Figure 5; 5V turns the 3.3V module and uses the ASM1117-3.3 chip to be core, and physical circuit as shown in Figure 6; 5V turns-and the 12V module uses is the MAX765 chip, and physical circuit is as shown in Figure 7; That the 100V module that turns 12V adopts is the high-pressure modular HB-Z101-45C that has made to order, and physical circuit as shown in Figure 8.
Master controller adopts AVR single chip computer AT Mega128, works under the 8MHz frequency, can use JTAG pattern programming program.That the DA module adopts is 12 high precision analogue conversion chip DAC7512, as shown in Figure 9.
The structure of high voltage amplifier circuit of the present invention as shown in Figure 2; that wherein the high voltage operational amplifier chip adopts is high-precision amplification device PA240; voltage protection circuit is made of voltage-stabiliser tube; the multiplication factor regulating circuit is built by Chip-R and small-sized slide rheostat; polarity and nonpolar electric capacity consist of filter circuit, reduce system's ripple.The material object of the Miniature piezoelectric ceramic driving control system that present embodiment is made as shown in figure 10, its volume is 10.7cm * 7.6cm * 4cm, the volume that is generally 40cm * 40cm * 18cm than the Piezoelectric Ceramic control system on the market is little a lot.
As shown in Figure 1, when outside to a triggering signal of control system the time, control system is started working, master controller is immediately to the DA circuit sending signal, the DA circuit converts the signal that is subject to simulation small voltage signal, the input stage that simulation small voltage signal enters the high voltage amplifier circuit obtains driving piezoelectric ceramic by the high voltage amplifier circuit and realizes micrometric displacement.
Embodiment
Below in conjunction with example utilization of the present invention is described, after the Piezoelectric Ceramic control system of present embodiment completes, we are installed on this Miniature piezoelectric ceramic driving control system in the thermal infrared imager, are used for driving the piezoelectric ceramic of this thermal imager relay lens.The frequency of system triggers signal is 60Hz, and the duty ratio of its waveform is 5.988%; The trailing edge of triggering signal triggers main controller module, make it to pass through SPI(SerialPeripheralInterface, serial bus interface) bus to digital signal of DA transmission (in the present embodiment, its value is 0XBB8,), the DA modular converter converts this digital signal the aanalogvoltage small-signal of 3V to, and then the high voltage amplifier circuit becomes the high pressure of 90V with this voltage amplification, and then drives piezoelectric ceramic and carry out high-precision micrometric displacement.
In the present embodiment, under the effect of system triggers signal, the relay lens that control system of the present invention drives thermal imager moves in two dimensional surface, thereby makes the thermal imager imaging that the interframe displacement be arranged.There is the low-resolution image of relative displacement to be combined into a vertical frame dimension image in different resolution four frames by the micro scanning technology again, as shown in figure 11.A is 4 two field pictures before rebuilding, and resolution is that relative displacement is arranged between 320 * 240, four two field pictures, and b is the effect after rebuilding according to four frame low-resolution images, and resolution is 640 * 480.Rebuild effect in order to compare high resolution, Figure 11 (b) is compared with the regional area amplification of Figure 11 (c), image before the reconstruction with shown in Figure 11 (e), is rebuild rear shown in Figure 11 (d) and Figure 11 (f) such as Figure 11 (c).As seen after having carried out the high resolution reconstruction, it is more fine and smooth abundant that image detail becomes.Experimental result shows that Miniature piezoelectric ceramic driving control system of the present invention is effectively, in miniaturization, can realize the control of piezoelectric ceramic micrometric displacement.
Claims (5)
1. a Miniature piezoelectric ceramic driving control system is characterized in that: comprise power circuit module, master controller, DA conversion and high voltage amplifier circuit;
The power circuit module comprises that 12V turns 5V, 5V and turns 3.3V, 12V and turn 100V, 5V and turn-four submodules of 12V; 12V turns the 5V submodule and turns 3.3V submodule, 5V with 5V respectively and turn-and the 12V submodule is connected; Wherein 12V turns 100V inside and contains filter circuit, and the 100V voltage that generates is carried out exporting after the filtering;
Master controller comprises singlechip chip, jtag interface, electrify restoration circuit, coupling capacitance, high frequency crystal oscillator; Wherein jtag interface, electrify restoration circuit, coupling capacitance, high frequency crystal oscillator are connected to around the singlechip chip with star structure; Singlechip chip possesses the high-speed low-power-consumption characteristics, and its function is for coordinating each function sub-modules of whole driving control system; Jtag interface has 10 lines, and 2 is ground wire, and 2 is the 3.3V power line, and 4 holding wires are respectively by drawing on the 10K resistance, and other has two lines unsettled, and master controller can be downloaded computer program by jtag interface; High frequency crystal oscillator is by the 22pF capacity earth, for singlechip chip provides basic clock signal; Electrify restoration circuit is connected on the reset pin of singlechip chip, realizes the electrification reset function of driving control system, comprises the pull-up resistor of 1K and the charging capacitor of 0.1uF, and the reseting signal line of master controller is connected between pull-up resistor and the charging capacitor;
The digital signal that the DA modular converter generates master controller is converted to simulation small voltage signal, and its conversion accuracy is had relatively high expectations, 10 or 12 of General Requirements;
The high voltage amplifier circuit zooms into driving voltage output with the aanalogvoltage small-signal through operational amplifier, comprises-the 12V filter circuit, operational amplifier, multiplication factor regulating circuit and voltage protection circuit; Wherein-12V filter circuit, multiplication factor regulating circuit link to each other with operational amplifier respectively with voltage protection circuit; Wherein adopt miniaturization high voltage operational amplifier chip to substitute traditional analog circuit; The supply power voltage of high voltage amplifier circuit module has two-way, is respectively-12V and 100V, wherein-12V voltage is furnished with that the polar capacitor of 0.1uF and 10uF forms-the 12V filter circuit; Voltage protection circuit comprises two voltage-stabiliser tubes and 1K resistance; Wherein two pins of high voltage operational amplifier chip link to each other by the two-way voltage-stabiliser tube, oppositely reach the problems such as input voltage is excessive to prevent polarity of voltage; One of these two pins are by the grounding through resistance of 1K, and simulation small-signal is linked in the high voltage operational amplifier chip through the resistance of 1K; The output pin of high voltage operational amplifier chip and connect between the pin of 1K resistance and be connected to the multiplication factor regulating circuit, it comprises the slide rheostat of 10K resistance, 1M resistance and 50K, contacts with 10K resistance after slide rheostat and 1M resistance also connect;
Above-mentioned composition annexation is: the 5V of power circuit module turns the 3.3V submodule and connects respectively master controller and DA modular converter, and 5V turns-and the 12V submodule is connected the 100V submodule and connects the high voltage amplifier circuit with 12V; The digital signal output of master controller connects the DA modular converter; The analog signal output of DA modular converter connects the high voltage amplifier circuit.
2. a kind of Miniature piezoelectric ceramic driving control system according to claim 1, it is characterized in that: described DA modular converter is take DA conversion chip DAC7512 as core, one of them pin of this chip is received on the 3.3V voltage, a pin ground connection is connected to the filter circuit that 0.1uF and 10uF build between these two pins; Other has three pins to link to each other with master controller.
3. a kind of Miniature piezoelectric ceramic driving control system according to claim 1, it is characterized in that: general-12V and 100V power line cloth are wide in the described high voltage amplifier circuit, and width is generally 20 mil to realize electrostatic defending.
4. a kind of Miniature piezoelectric ceramic driving control system according to claim 1, it is characterized in that: the singlechip chip in the described master controller is preferably control chip ATMega128.
5. a kind of Miniature piezoelectric ceramic driving control system according to claim 1, it is characterized in that: the operational amplifier in the described high voltage amplifier circuit is preferably the PA240 chip.
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| CN 201110171520 CN102307022B (en) | 2011-06-24 | 2011-06-24 | Miniature piezoelectric ceramic driving control system |
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| CN103676725A (en) * | 2013-11-20 | 2014-03-26 | 中国航空工业集团公司北京长城计量测试技术研究所 | High-voltage piezoelectric ceramic controller with function of power-on impact |
| CN104267746B (en) * | 2014-09-26 | 2017-02-15 | 杭州墨锐机电科技有限公司 | Mirror plane control system |
| CN106510751A (en) * | 2016-09-28 | 2017-03-22 | 华南师范大学 | Multifunctional electronic stethoscope and auscultation system |
| CN106597921A (en) * | 2016-11-17 | 2017-04-26 | 中国航空工业集团公司洛阳电光设备研究所 | Piezoelectric ceramic control method for infrared image reconstruction and device thereof |
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| CN101043186A (en) * | 2006-11-09 | 2007-09-26 | 重庆大学 | Dynamic piezoelectric or electrostrictive ceramic drive power supply |
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| US8040018B2 (en) * | 2007-08-01 | 2011-10-18 | Samsung Electronics Co., Ltd. | Piezoelectric transformer type high-voltage power apparatus and image forming apparatus |
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| CN101043186A (en) * | 2006-11-09 | 2007-09-26 | 重庆大学 | Dynamic piezoelectric or electrostrictive ceramic drive power supply |
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